TMS-104-02-S-S Equivalent & Substitute Parts

Part Overview

The TMS-104-02-S-S is a 4-position rectangular connector header manufactured by Samtec Inc., designed for through-hole board-to-board applications with 0.050" (1.27mm) pitch spacing. This connector features male pins with gold-plated mating contacts and tin-plated posts, operating across -55°C to 125°C with a 5A per contact current rating. The part is Active status and RoHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters align with the core specifications, enabling direct functional replacement in applications where the original part may be unavailable or require alternative sourcing.

Substiute Parts

TMS-104-02-S-S

Samtec Inc.In Stock: 1043TMS-104-02-S-S Datasheet

Current PartRFQ

5-104178-1

TE Connectivity AMP ConnectorsIn Stock: 11905-104178-1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TMS-104-02-S-S is determined by strict alignment of the following core parameters:

• Connector Type: Header (unshrouded, board-to-board)
• Contact Type: Male Pin
• Pitch - Mating: 0.050" (1.27mm)
• Number of Positions: 4
• Number of Rows: 1
• Mounting Type: Through Hole
• Termination: Solder
• Contact Shape: Square
• Material Flammability Rating: UL94 V-0
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part 5-104178-1 (TE Connectivity AMP Connectors) meets all core substitution criteria. Both parts share identical pitch spacing, position count, row configuration, mounting method, and termination type. Both feature square contacts with gold-plated mating surfaces and tin-plated posts. Both are rated UL94 V-0 and MSL 1. Differences in insulation material (LCP vs. Thermoplastic), operating temperature range, and contact material (Phosphor Bronze vs. Copper Alloy) do not preclude substitution when the application requirements fall within the substitute's specified operating envelope.

Parameter Comparison

Engineering Selection Recommendations

Both the TMS-104-02-S-S and 5-104178-1 are Active status products with full RoHS compliance and MSL 1 rating, making them suitable for production applications. The TMS-104-02-S-S offers a wider operating temperature range (-55°C to 125°C) compared to the TE Connectivity substitute (-65°C to 105°C). Selection between these parts should be based on the specific application's temperature requirements. If the application operates within -65°C to 105°C, the 5-104178-1 is functionally equivalent. If sustained operation above 105°C is required, the TMS-104-02-S-S is the appropriate choice. Both parts meet UL94 V-0 flammability requirements and feature identical pitch, position count, and contact geometry, ensuring mechanical and electrical compatibility within their respective operating envelopes.

Frequently Asked Questions (FAQ)

Q: Can 5-104178-1 be used as a direct replacement for TMS-104-02-S-S?

A: Yes, within the operating temperature range of -65°C to 105°C. Both connectors share identical pitch (0.050"), position count (4), row configuration (1), contact geometry (square male pins), and termination method (solder). Both are UL94 V-0 rated and MSL 1. If your application requires operation above 105°C, the TMS-104-02-S-S is required.

Q: What are the key differences between these two parts?

A: The primary differences are: (1) Operating temperature range: TMS-104-02-S-S operates to 125°C while 5-104178-1 operates to 105°C; (2) Insulation material: TMS-104-02-S-S uses Liquid Crystal Polymer (LCP) while 5-104178-1 uses Thermoplastic; (3) Contact material: TMS-104-02-S-S uses Phosphor Bronze while 5-104178-1 uses Copper Alloy; (4) Packaging: TMS-104-02-S-S is supplied in Bulk while 5-104178-1 is supplied in Tube.

Q: Are the physical dimensions identical?

A: Yes. Both connectors have identical overall contact length (0.320"), insulation height (0.100"), and pitch spacing (0.050"). They are mechanically interchangeable in board layouts.

Q: Do both parts meet RoHS requirements?

A: Yes. The TMS-104-02-S-S is ROHS3 compliant and the 5-104178-1 is RoHS compliant. Both meet current RoHS standards for production use.

Q: What is the current rating for each part?

A: The TMS-104-02-S-S is rated at 5A per contact. The current rating for 5-104178-1 is not specified in the provided data; verify with the manufacturer if current capacity is a critical design parameter.